Recently, developments of the Schwinger-Dyson equations have been applied in the study of various subjects like, for instance, the renormalization theory [1]}, [2]}, condensed matter investigations [3]}, [4]}, and bound states and strong interactions [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]}, [13]}, [14]}. Standard Schwinger-Dyson equations have been used also in the case of topological quantum field theories with and without matter [15]}, [16]}, [17]}.
